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18
votes
14answers
16k views

Unexplained slow gigabit network speeds

Update Ok, I've tried the answers below and nothing has changed. I've identified the chipset in the laptop as the NVIDIA nForce 520. I downloaded the latest Vista x64 drivers for the nForce 520 ...
6
votes
8answers
2k views

Determining why file transfers are so slow

I'm trying to transfer large files (3+ gigs each) across the lan. My connection is 100 megabit to the box, with a gigabit backbone. However, when transfering files between servers and from a server to ...
5
votes
4answers
790 views

Connections establish slowly, while download rate is great -Linux

EDIT: I have seen this problem elsewhere with an ADSL connection and not only USB modems or cell network. I have my cell network USB modem attached and configured, running under Ubuntu 10.04 The ...
5
votes
4answers
3k views

mysql connection is slow (5seconds)

After building my webapp on a first boot i create 2 connections to mysql on debian then 1-2 (r/w) for every page after that. The connection consistently take 5.2 seconds to connect. Debian is in a VM ...
4
votes
2answers
277 views

Linux box takes 10 seconds to make a connection

My machine is taking 10 seconds to establish a connection. Once the connection is established, it is up to speed and works correctly. But if I for example ping www.google.com, it takes 5 seconds for ...
4
votes
1answer
4k views

ESXi 5.5, slow network speed when writing to guests

This is an issue that has been bugging me for a lot time with ESXi. I had the issue with my old Dell server (ESXi 5.0 and 5.5) and even with my new Dell T20 (ESXi 5.5). For the current issue at hand I ...
3
votes
10answers
6k views

Is it possible to merge multiple internet connections?

I have two internet connections at my place but the faster one is actually unreliable. :( One is a broadband modem connected to PC via ethernet. The other one is a USB modem. I would want to run ...
3
votes
3answers
2k views

Slow network-home-folder use, many spinning beachballs

Xserve with 10.4.11 connected to Xserve RAID via FC. 208GB of 1.82TB available. Xserve connects to HP 2848 Gigabit switch Xserve houses network-home-folders for 14 users. Clients (mac mini - intel ...
3
votes
3answers
1k views

Timeouts when connecting to SQL Server since installing SP1 for Windows 7

I just installed SP1 for windows 7 and I have severe performance degradation when connecting to SQL Server 2005 since then. Establishing connection takes more than 30 seconds while it's instantaneous ...
3
votes
1answer
955 views

Diagnosing Server 2008 and Windows 7 LAN Speed

I have a customer with Server 2008 in a VM, and maybe 15 Windows 7 clients. They are experiencing slowness when using an ERP system whose data resides on the server. The database in question is a load ...
3
votes
1answer
3k views

FreeNAS box has slow network transmit speeds

I'm seeing some really odd issues with network speeds on my FreeNas 8.0.3 box. Receiving traffic is fine, but sending traffic slows down to 10-50kb/s, and stalls a lot. Receiving: Transmitting: ...
3
votes
2answers
3k views

Mac OS X machines - VERY slow access to Windows shares

I have a handful of mac boxes accessing a share from a remote Windows Server 2003 box over a site-to-site VPN. They are connecting to the share using cifs, authenticating with AD credentials, and ...
2
votes
3answers
2k views

Email delivery is slow between us and counterparty. What can I do to determine root cause?

Emails between us and a specific counterparty are delayed. To give you some idea, we send 10 messages and over 40% arrive with a 20 (or greater) minute delay. We even had two messages arrive in 50 ...
2
votes
7answers
2k views

Slow IE8 Startup

Has anyone else had issues with IE8 taking it's own sweet time starting up and/or hanging? I have a couple of machines on my network that won't start up quickly (like over a minute to load). I've ...
2
votes
5answers
16k views

Windows 7 extremely slow login, exchange performance, printer enumeration, etc

Background: I have a fresh copy of Windows 7 Professional x64 on a Dell Latitude E6500. The laptop has 8GB RAM, 250GB drive, and all Intel peripherals (net/wifi/graphics). All available Windows ...
2
votes
2answers
652 views

MySql server connection problem

We've recently begun to have some downtime due to our database server (MySql) stops responding/refuses connections. We get the following (a lot) when we monitor with mytop: 5033 unauthent ...
2
votes
1answer
1k views

Connection to SQL Server 2008 R2 Database Server is SLOW

The database server is a VM running SQL Server 2008 R2 on top of Windows Server 2012, 24GB RAM allocated and 2TB of disk space. Overall, the database connections are very slow and one thing that ...
2
votes
2answers
169 views

Troubleshooting A Slow Website/Internet Connection

When I load my website, there is a significant connection lag. Sometimes, the page will take 20-30 seconds just to connect to the server and sometimes it will never finalize the request, only ...
2
votes
3answers
430 views

Stop slowing down fast and verbose operations when using ssh over slow connections

I often copy many files between 2 servers connected via 1GBit ethernet while I am connected via VPN and SSH over DSL. The problem is, that the verbose output (1 line per copied file) which needs to be ...
2
votes
2answers
545 views

Disk overload and slow server

I monitored my disk on my server because my website is slow. Here is my disk statistic: Read: 0.29 reqs/s Write: 50.19 reqs/s I don't understand why I have 50 requests by second on my disk in ...
2
votes
1answer
161 views

How to silently buffer tunnel traffic on network split, and automatically renew the connection when possible?

I have a slow connection between two machines, one in Germany and another in China. Connection sometimes breaks apart, and the packet loss is about 5%, at times even reaching 20%. Chinese machine has ...
2
votes
3answers
953 views

How to speed up Drupal 7 with remote DB (not DNS resolving)

we have Drupal 7 on Ubuntu LTS virtual machine (VMWare) with MySQL 5.1 server on the same physical server, but on a different virtual machine. The Drupal website is currently under development, ...
2
votes
1answer
376 views

Mac clients intermittently wait minutes to connect to SMB shares

My Mac OS X (10.6 & 10.7) clients all intermittently but frequently experience extremely slow connection times to my Windows 2008R2 shares. From the Go To Server menu, they can enter an smb:// ...
1
vote
2answers
788 views

Fedora slow login using ssh or telnet using ipaddress

HEllo my friends... My fedora 7 server has become very slow in the login phase from ssh or telnet. I just use ip to connect (no dns needs) and when I log locally it's fast as usual. If I ping or ...
1
vote
1answer
447 views

Gigabit Ethernet on 200 mbit/s speed - why?

Today I tried to connect two laptop computers, both having Gigabit Ethernet NICs, both with Windows 7, with straight cable cat 5e. The cable is ca 50 cm long so the category 5e should be enough. I've ...
1
vote
5answers
789 views

DIR-625 Router - Apple computers slow web browsing

I have a DIR-625 Wireless Router for my home network. We have several PCs connected and all get excellent speeds but for some reason, the 2 Apple notebooks I have connected drag when loading up web ...
1
vote
1answer
2k views

Performance - Windows Server 2008 R2 vs Windows Server 2012 [closed]

we have two different server that runs the same server application. They have to handle lot of connections (2000+) in a custom protocol, our users have our program to connect to our servers. Machine ...
1
vote
1answer
324 views

4 - 7 second delay accessing Mysql across the network

our company has recently purchased a new server with the intention of replacing our aging database server. its a full 64bit 2008 enterprise system, i have got the basic server setup and configured ...
1
vote
4answers
455 views

ADSL to T1, Is it worth it for us?

The company I work for has roughly 45-55 simultaneous users (local and remote/VPN) logged in at a given time. We currently subscribe to an ADSL connection but we have been experiencing slower ...
1
vote
4answers
668 views

Entire home network slows down due to Linksys WRT54GL [closed]

This is the second one I'm trying, so it's either me or something else is up. When I connect any of my LAN devices directly to our cable modem, the speeds are perfect. No latency, no packet loss and ...
1
vote
4answers
118 views

Throw Away Dial-Up Account

I'm going away on vacation to a location in Canada where highspeed internet access is not readily available. There's been a dial up connection until this year, where it got cancelled to save money as ...
1
vote
2answers
1k views

Connecting to mysql over TCP hangs for 3 seconds

I have a problem with a newly installed MySQL box: When trying to access the database with multiple clients and a lots of retries, sporadically, connecting takes longer than 3 seconds. I only get ...
1
vote
2answers
213 views

centos TCP/IP connection very slow

I have a VSP (centos6.1 64bit) with 4gb ram. It always runs well, but in recent few days, the server become slowly. open a small css file need 22 seconds(2kb). tested in home/office/phone with ...
1
vote
1answer
862 views

Cisco IPSEC VPN Slow Speeds

We have a site to site IPSEC VPN, both endpoints are Cisco PIX 515e's. The links at both end are 100mb, however speeds over the VPN (logged using jperf) are at most 4mb. Obviously this represents a ...
1
vote
1answer
236 views

Simulate slow network connection to MySQl server

I tried fiddler and wireshark to simulate slow network connections. I could slow down the network with fiddler but it is for Http and https protocols. With wireshark I was able to capture TCP & ...
1
vote
1answer
2k views

Linux PHP web server horribly slow when accessed from any windows browser

I have a Linux server (Ubuntu 10.04) running apache2 and PHP. Everything runs fine when accessing a page from any browser from another Linux machine or Mac. But when I try to access a page from any ...
1
vote
1answer
202 views

mysql always using maximum connection

I have LAMP server having 4 core CPU and 32 GB RAM.We are running a large website on it. I have following issues now in my server. When I use Mysqlreport tool to monitor the mysql server i am always ...
1
vote
2answers
620 views

How to set up a second email server?

We have a MDaemon email sevrer hosting in our office in Vietnam using lease line 1.5Mbps. Inside Vietnam, our staff can access email without any problem but in some countries like Australia, HongKong ...
1
vote
3answers
404 views

Weird network/internet problem. Need some input

I'm seeing some weird network problems on one of my machines, and I need some input :) I have a host machine running Windows Server 2008 R2 and the Hyper-V role. I have several guest machines ...
1
vote
1answer
331 views

Measure/track page load times

I have a few employees who only have access to one website. This website they use for absolutely everything they do and they have started to tell me how slow it is as certain parts of the day. At ...
1
vote
1answer
261 views

Artificially cap bandwidth on XP Pro… possible?

I'm looking for a way to artificially cap the bandwidth of my net connection on XP home to say, 1MB, temporarily. I've had a look at the QoS Packet Scheduler with little luck. Any ideas? [Boring ...
1
vote
8answers
1k views

Very slow network connection

At work, we are currently using a Linksys WRT54GL (yeah, i know), running DDWRT v.23. There is about 50 computers plugged into our network, all routed through a Linksys SRW2048 switch. The problem ...
1
vote
1answer
35 views

Website takes longer to respond on new high-end VPS than on old shared hosting

On behalf of my client, I have recently migrated all of their websites over to a high end VPS which they have rented. I have recently optimized several settings as recommended in another question I ...
1
vote
1answer
78 views

bacula backups very slow with TCP socket in 'unkn-4' state

Several bacula-fd clients are backing up to one bacula SD (using 2G disk files on massive RAID, not tape), usually 2-3 of them concurrently. It works fine, except when 2 bigger clients (about ...
1
vote
0answers
59 views

TCP Window Size Allocation, TCP Window Zero Errors and Network Latency

My mind is about to explode as everyone is always blaming the network guys for disconnections and slowness in the networks, but Solarwinds Reports that all utilization in the network devices and links ...
1
vote
0answers
108 views

What causes my new web server to delay its response?

I'm migrating my servers from Rackspace over to Amazon. Our servers are running mod_perl and the connect times are much longer on the Amazon server (oftentimes up to 1 second just to connect) with ...
1
vote
1answer
328 views

Slow Network Transfer Through Linux Firewall VM

We have a RedHat 5.8 VM running on ESX on top of Cisco UCS that is acting as a firewall using iptables. The box has multiple nics, one nic serves as the gateway to our network with the other nics ...
1
vote
1answer
76 views

Downloads from Bamboo server are slow, how can I debug this?

I have a Windows box running Bamboo, a continuous integration server. I can download files from it over HTTP, but they're really slow, like 80 kbps slow. I don't have any speed issues copying files ...
0
votes
3answers
94 views

Why aren't local requests almost instant?

This is purely out of curiosity, but with every local server I've ever setup, there has always been a 0.5-2 second delay until pages are displayed. Just as an example, I've setup a completely blank ...
0
votes
1answer
233 views

LAN bandwidth in Linux is low

everyone, I connect two PCs both with 1000Mbps NIC. One(A) of them runs Fedora 8 while another(B) runs Windows7. I test bandwidth between them with Ixchariot, it shows about 10Mbps. If A and B both ...